This page brings together every constellation that starts with the letter X, and right now that list holds just 1 entry: “Xiphias”. It is a rare historical name from the southern sky, the kind of label that fascinates stargazers, amateur astronomers, and anyone curious about how star groups got their names. Even with a single item, it offers a neat window into the history of celestial mapping.

Constellations are patterns of stars that people group together and name, often after animals, objects, or figures from myth and legend. Sky watchers have used them for thousands of years to navigate, track the seasons, and tell stories. “Xiphias,” for example, was an early name for the swordfish before astronomers settled on the title Dorado.

Below you’ll find the table with the constellation name, hemisphere, best viewing month, notable stars, and a short description.

Constellation: This gives you the name of the star group, so you can quickly identify it and look it up for more detail later.

Hemisphere: This tells you whether the constellation appears in the northern or southern sky, helping you know if you can see it from where you live.

Best Viewing Month: This points you to the time of year when the constellation sits highest and clearest, giving you the best chance for a good view.

Notable Stars: This lists the brightest or most important stars in the group, which serve as handy markers when you try to spot it.

Description: This shares a brief background on the constellation, including its meaning and history, so you understand the story behind the name.

Constellations

ConstellationHemisphereBest Viewing MonthNotable Stars
XiphiasSouthernJanuaryAlpha Doradus, Beta Doradus

Descriptions

Xiphias
An obsolete name for the constellation Dorado, the Swordfish. Coined by early modern astronomers, “Xiphias” (Greek for swordfish) labeled this southern star group before the name Dorado became standard.
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